help! BFP then two BFN then AF? now BFPs?!

Alyssa
What can explain this:
September 14 - faint positive on frer
September 15 - negative on multiple tests
September 16 - started bleeding a little heavier then the very light spotting I had. Bled for a day and a half to two days.
AF Wasn't due until September 20, yesterday. It was weird that it was early and not my normal 4 days, so to ease my mind and out of curiosity I took a test and had two very faint positives last night.
Then today, September 21, negative frer and wondfo strips. Maybe have one super faint positive this morning but that's it.
Is there something else wrong with me? I requested bloodworm from my primary care doctor this morning. Just want to know what you all think.
First pic was last week, last two are last night.